Assigitob to william



(No Model.)- 4 Sheets-Sheet l.

T. M. FOUTE.

SPEED REGULATOR.

No. 383,452. Patented May 29, 18881.

(No Model.) 4 Sheets-Sheet 2.

T. M. FOUTE. SPEED REGULATOR.

PatentedMay 29, 1888.

N. PETERS. Pnuwmhographer. washington D. C."

(No Medel.) 4 sheets-sheet 3.

T. M. FOOTE.

SPEED REGULATOR.

Ne. 383,452. Petented Mey 29, 1888.

I *JE Enz.

N. Pneus, Phewumegnphee wnmngwn. o. c4

(No Model.) 4 Sheets-Sheet 4.

T. M. FOOTE. SPEED REGULATOR.

No. 388,452. y Patented May 29, 1888..

WI'ESS E5.

' N PETERS. Phmwmhagnpl-or. whzngxm n c li'wrrnn Freres artnr Ormes@ THEODORE M. FOOTE, OF BOSTON, MASSACHUSETTS, ASSTGNOR TO WILLIAM LUMB,y TRUSTEE, OF SAME PLACE.

SPEEDQREGULATOR.

SPECIFICATION' forming part of Letters Patent No. 383,452, dated May 29, 1888.

Application filed April 25, 1887. Serial No. 236,111. (No model.)

.To @ZZ whom may concern,.-

Be it known that l, Tr-rnononn M. Fcorn, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful SpeedRegulator, of which the following is a specification, reference being had to the accompanying drawings, in which Figure l is a side elevation ot' one form of my regulator. Fig. 2 is an elevation, partly in section. Fig. 3 is a section on line 3 3 of Fig. 2, looking to the left. Fig. et is a section on line 4 4c of Fig. l, looking tothe right. Fig. 5 is a section on line 5 5 of Fig. 4. Fig. 6 is a longitudinal section with my supplementary regulator in place, and Figs. 7 and 8 are details.

My invention is, mainly, a contrivance made up of a novel friction-coupling connecting the driver with the shaft to be driven, and a governor which controls one member of the friction-coupling and' increases or decreases the amount of friction in accordance with the varyv ing speed of the driver, the purpose being to regulate the speed of dynamos or other machines which are to move at a constant speed.

Other features of my invention are set forth and claimed hereinafter.

In the drawings the driver is marked A, and is a driving-pulley which rotates at a speed in excess of that desired for shaft E, which represents the drivingshaft cfa dynamo or of any other machine whose speed is to be regulated. Driver' A is fast to sleeve a, and this sleeve carries a wheel, f,which forms one member of the friction device F. The other member of the friction device F is made up of brake-shoes f,which are so connected to shaft B that they must rotate together, and also so connected with governors G that the friction between the brakeshoesf and wheel f is diminished whenever the speed of shaft B tends to exceed the amount desired, whereby the speed of shaft B is regulated. In that form of my invention shown in the drawings there are three brakeshoesf, of sheet metal, having some springiness, and these brake-shoes are carried by a carrier, fwhich partially incases wheel f, the carrier f being fast on shaft B. Each of these brakeshoes f is preferably faced with a compound fabric, m, compounded fabric in consisting in this case of two laminations, as

shown in Figs. 2, 3, 5, and (i, the innersurface of which is at all times in frictional contact with the outer surface of wheel f, and each brake-1 shoe f is controlled by a lever, f3, fulerumed t in the carrier f 2. The levers f3 are connected with links f t from slide f 5, which is forced in one direction by a sprnggfs, and in the op: posite direction by the governors G. Slidef is best made in the form of a sleeve, as shown in the drawings. The tension of springf6 is regulated by means of sleevef, which is ad` justed in either direction on shaft B, and is sccured by any suitable means. Slide fLx is moved against its spring f 6 by means of the governors G, which are fulerumed to carrierj'z, so that the governors rotate with the shaft B.

in that form of my speed-regulator above described both the spring f and the governors G can be adjusted readily'and nicely to give the desired speed, and this ease and nicety of adjustment is a matter of very great importance, as is 'well known to all skilled in the art.

The best form of device `for regulating gov ernors G now known to meis that shown in Figs. 6, 7, and 8, in which slide H (best made in the form of a sleeve and mounted on shaft E, as shown) has lugs 7i, in which are mounted rods h', passing through slots in the crosspieces h2, that are carried by and are movable on the governors G. Springs h3 connect crosspieees l to lugs h on slide H.

The operation is as follows: The driver A is driven with a speed in excess of that desired for shaft B. The sleevej"7 is sc set that the spring f(3 will cause slide f, by means of links f i and levers f3, to force the brake-shoes f against friction-wheel f, and thereby create sufficient friction to cause shaft B to rotate with driver A. vVh'en slidef5 is moved sufiiciently near carrierf2 to force the shocsf into greater frictional contact with wheelf, linksfL will be brought into such. relation to the levers f5, pressing on frieion-shoesf, that the members of the friction device F will be held in the required frictional Contact until centrifugal force acting upon the governors G moves sleeve f away from carrier f2, and thereby causing thefree ends of levers fsto move away from brake-shoesf, which then spring back very slightly, but not so far as to become IOO out of Contact with friction-wheelf. As sleeve f 5 is thus moved away from the carrier f2, it compresses the spring f". The centrifugal force of course does not act until shaft B has 5 attained the desired speed, and when the governors G are properly weighted and adjusted to suit springs f the speed of shaft B is accurately regulated. While not strictly essential, it is yet clear that both governors G and ro the springs f6 should be adjustable for the best results.

When the governor-regulating,r device above described is used, the speed of shaft B is readily varied by moving slide H, say by a forked if; lever, J, so as to bring cross-pieces h2 nearer to or farther from the fulcra of the governors,

whereby the force of springs h upon the gov- 25 bination with carrier f2, mounted on shaft B,

and one or more brake-shoes,f, secured in contact with friction-Wheelf, to the carrier-f, substantially as and for the purpose set forth.

2. Driver A and frietion-wheelf, in coinbination with carrier f2, mounted on shaft B, one or more brake-shoes,f, secured in contact With friction-Wheel f, to the carrier f2, and means, substantially such as described--viz., one or more levers, f3, and links f4, and sliding sleevef--for increasing the frictional con tact between brake shoes f and friction- Wheelf, substantially as and for the purpose set forth.

3. In a friction-coupling, the combination of friction-Wheelf and one or more brakeshoes,f, in contact with friotion-wlieelf,with one or more levers, f3, and linksf, slidef, and springf, substantially as and for the purpose set forth.

4. In a speed-regulator, the combination of a governor, G,with slide I-I, and springs 71,3, con neeting the governor and slide, substantially as and for the purpose set forth.

THEODORE M. FGOTE.

Witnesses:

R. L. WALKER, J. E. MAYNADIER. 

